Last night, Jimmy Kimmel hosted The Bachelor's Jake Pavelka and his newly intended, the universally loathed before everyone kind of threw up their hands and went "eh?" Vienna Girardi. Jake finally clears up the huge mystery of why he didn't choose runner-up Tenley. After delicately explaining over and over on the show's last episode as well as the After the Final Rose special that what was missing between Jake and Tenley was "physical chemistry," (to which Tenley repeatedly begged "What does that mean?"), Jake hangs his head and, like a little boy who told a lie, finally "comes clean" about what everyone in the world except Tenley knows about the meaning of "physical chemistry." The shocking revelation comes at the 2:35 mark.